Game crashes on startup

This just started happening after I tried running the Editor. Was getting this error:

The procedure entry point CreateDXGIFactory2 could not be located d3d11.dll

I googled it and found that it was a SweetFX issue, so I deleted that and now the whole game won’t start. I’ve tried re-installing onto a different drive, running the game as admin, verifying my game cache, and a few more of the suggestions in the stickied thread.